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# College Algebra

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Suppose f is a linear function such that f(5) = 2. If the slope of f is 3.1, then what is f(10)? (Round your answer to one decimal place.)

f(10) = ____

idenny  Feb 26, 2017

#1
+82897
+5

We have the point (5,2) on the graph

If the slope is  3.1,  f(10)  =  (10, 17.5)

If the slope is meant to be 3:1, then f(10)  =  (10, 17)

CPhill  Feb 26, 2017
Sort:

#1
+82897
+5

We have the point (5,2) on the graph

If the slope is  3.1,  f(10)  =  (10, 17.5)

If the slope is meant to be 3:1, then f(10)  =  (10, 17)

CPhill  Feb 26, 2017
#2
+216
0

Can you please tell me how you got 17.5 in details? Step by step?

idenny  Feb 26, 2017
#3
+82897
+5

If the slope is  3.1,  this equals  3.1 / 1

So......everytime x changes by 1, y changes by 3.1

And x changes by 5  from  f(5) to f(10).....so....y changes by  5(3.1)  = 15.5

And adding that to its original value of 2 ....[ remember....(5.2)  is the original point ] we have

15.5 + 2  = 17.5

CPhill  Feb 26, 2017

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